Safety-razor-stropping device.



P. GATUCCI TY RAZOR STROPPING DEVICE. APPLIUATION FILI-111 JULY 17 SAFEPatented J an. 20, 1914.

UNITED srarn s regimi? ortica.

PLINY CATUCCI, 0F NEWARK, NEW JERSEY, ASSIGNOR T0 A. F. MEISSELBAH &

BROTHER, A CORPORATION OF NEW JERSEY.

SAFETY-RAZOR-STROPPING DEITICE.

Patented' J an. 20,1914.

Application filed July 17, 1911. Serial No. 638,812.

To all whom it may concern Bc .it known that I, ILINY CAfmeoI, a citizenof the United States, and resident of the city of Newark,L county'ofEssex, and State of New Jersey, have invented certain new and usefulImprovements in Safety- Razor- Stropping Devices, of which the followingis a true and exact description, such as will enable others skilled inthe art to which it pertains to make, construct, and use the same.

The object of my invention is to provide a neat, eli'ective and cheapdevice for ,sharpening rat/.or blades of the double edged type by meansof a single mutilated cylindrical st'roppin g roller.

It further contemplates mechanism for preventing the rounding oit theedge of the blade as it leaves the strop and further provides mechanism:tor reciprocating the strop roller vso as to give a heel to point lmovement of the blade.

Another object of my invention is to provide a neat, ettective and cheapholder for the blade during the process of stropping.

Other objects will appear during the course of the following detaileddescription, taken in connection with the accompanying drawings wherein:

Figure 1 is a side elevation of the complete structure. Fig. 2 is afront elevation of the same. Figs. 3 and LIt are respectively front andside elevations illustrating a moditied form of the holding device. Fig.5 is a section through the blade holder and strop roller shaftillustrating the position taken by the blade as it leaves the tace ofthe strop parts throughout the speciiicationand drawpreparatory toreversal. the driving gear train. Figs. 7 and 8 illustrate respectively,asectional and plan view lof the blade locking mechanism. Fig. 9illustrates a modified form in section of the blade locking device.Figs. 10 and 11 illustrate, respectively in plan and side elevation, astill further modiied form of blade hold- -ing device. Fig. 12illustrates a cross-sectional view of the strop roller showing themerlihod ot securingy the strop thereon whereby.it may be readilyremoved and reversed so as to malte use ot both sides ci the strop.

Similar reference numerals refer to like 1n carryiiigolll' my invention,I provide a 4 trame- 1 of sheet metal bent into the form illustrated inFigs. 1 and 2, so as to provide Fig. (3 illustrates' the vertical sidebearing arms 2 and 3 and the lateral arm 4 bent at right angles assllown in Fig. 1 to which is secured the hanc e 5.

In Figs. 3 and 4, I have shown, substantially the same form of framewith the exception that I have omitted the lateral arm Ll, and secureddirectly to the bottom of the frame a handle device by means of therivetS 7. Otherwise the operative structure ot the device lillustratedin the two modifications is the same, and a description of the one willsuflice for a description of the other.

Secured to the outer side oi the upright arm 3 by means of the screws 8is the `bearing cap 9 of the shape clearly illustrated in Figs. 1, 2, 3,and 4, respectively. This bearto form a protecting cover for the drivinggears hereinafter described.`

Mounted in the vertical side arms 2 and 3 and finding bearingsrespectively in the arm 2 and the cap 9 is the shaft 10 upon which isslidably mounted the mutilated roller 11. The shaft 10 has at itsextreme end, a gear wheel 12 and a sleeve 13 upon 'which latter ismounted a cam 1li as clearly shown in Figs. 2 and 8. At the left handend ot the roller 1l' and concentric with the shaft 10 is asubstantially semi-circular cam 15 which eoperates with small roller 1G,the latter being` carried upon a bearing 17 secured to the side plate orarm 2. Between the opposite end oi" the roller 11 and the cam 14, andsurrounding the shaft 10 is a coil spring 18 the tendency of which is tocrowd the roller l1 with its cam 15 against the-roller 1G, so that asthe roller 11 rotates `it is given a slightly reciprocating motion inthe direction ot' its axis. As a means for causing the roller 11 torotate with the shaft 10 and yet have a small amount of lost motion, Iprovide a pin 1) projecting from the end of the roller 11 through asomewhat larger aperture 20 in the cam 111.

Mounted in the side plate 3 and the cap 9, is a sha'ft21 carryingthegear when '22, the lati er meshingwith and driving the gear 12.4 Theshaft. 21 projects somewhat outside of the plate or cap 5l and has'splined thereon the hub oi' the crank 2S.

Meshing with the gear 22 is a smaller `gear 24, the latter looselymounted upon a shaft The hub of the gear 24- is reduced at 2G so as toforni a bearing'in the cap or plate ing cap 9 is cupped as shown in Fig.2 so as i 'la 9 as clearly shown in Fig. 2. The shaft 25 is reduced indiameter where it passes through the gear 24, and has provided at itsouter end a washer 27 held in place by a screw 28. The larger portion 29of the shaft 25 is cut away as at 30 (Fig. 7) to form a seat for therazor blade 33. Rigidly secured to the enlarged portion 29 is a doublearm 34 carrying at'its outer extremities the two rollers 35 and 36 inalinement with the cam 14. Mounted between the face of the arm 34 andthe end of the gear 24 is a friction plate 37 and a spring 38 which forma friction device and permit the rotation of the g\ar 24 independent ofthe shaft 25 when the rotation of the shaft 25 is resisted by the blade33 bearing upon the face of the razor strop. The opposite end of theshaft 25 is reduced as at 39 so as to find a bearing in tleie upper endof the arm 2. The axis of thev r d uced portion'39 is bored out andscrew threaded as at 40 to receive the locking cone pointed thumb screw41 for a purpose hereinafter to be described.

Razor blades of the type for which this device is adapted are providedwith-a middle and two lateral apertures. In-order to rigidly hold suchblades in the cut-away portion 30 of the shaft 25, I provide two shortstuds 42, 43 and alonger stud 44 the latter being located in the middleof the cut-away portion 30. I next provide a flat plate 45 having acentral aperture 46 to take over .the stud 44, and of a length somewhatgreater than the length of the cut-a-way portion 30 s'o that, when inposition, one end of the plate 45 will be received in the undercut slot31, while the opposite end, being notched as at 47 will straddle thelarger portion of the shaft and the slight central depressed notch 48will project below the -axial line of the shaft, in position to receivethe cone pointed end of the locking thumb screw 41 which, when screwedhome, will rigidly hold the plate 45 in position, thereby clamping theblade 33 in a plane passing through the axis of the shaft 25. The studs42 43, ordinarily project somewhat higher than the thickness of theblade 33, and in order that the clamping plate 45 may find a fullbearing throughout the length of the blade, I rof vide depressions 49 inthe plate 45 of a depth sufficient to clear the projecting ends of thestuds 42, 43.

As a modification of the locking device illustrated in Figs. 7 and 8, Imay provide the following structure: The shaft 25 may have its pivotbearing 50 elongated and counter-bored as at 50 (Fig. 9). A pull pin 5.1with a collar 52 and projecting cone point 53 is inserted in thecounterbored portion with a spring 54 bearing upon'the collar 52 andheld in position by the centrally apertured cap 5,5. In this structure,it is only necessary to pull the pinv51, with its cone point, free fromthe depression 48,

Apartially cylindrical, having one side cut away as shown, and beingsurrounded by a considerable thickness of felt as 5G over which ispassed the leather strop 57 the ends of which are brought together uponthe flat side of the roller 11 and buttoned over the headed pin 58 in amanner which will be readily understood. This method of securing thestrop 57 to the roller 1l permits the strop 57 to be readily removed andreversed 'so that a honing composition maybe applied to one side of thestrop 57 and the other may be left as a finishing side.

The cam 14 isgenerallysemicircular in plan but has the projections 60,61 at the extremities of its straight side. These projeetions 60, 61vextend out into the path ofv the rollers 35, 36 just at the point wherethe blade 33 is leaving the face of the razor strop 57 as clearlyillustrated in Fig. 5 so that the edge of the blade does not follow theturn of .the strop 57 with a' resulting rounding of said edge.

The operation of the device is as follows:'

The razor blade having been clamped in position, the operator turns thecrank 23 first in one direction several turns, and thenreverses thedirection. lThe rotation of the crank, and with it, the gear 22 causes asimultaneous rotation of the gears 12 and4 24. '.lhe rotation of thegear 12 causes the rotation of the roller 11 to bring the strop 57 intothe path of the blade 33 as clearly illustrated in Figs. l, 2, 3, and 4.Vhile this rotation continues, the blade willbear with considerableforce upon the strop 57, due to the tendency of the shaft 25 to rotatethroughthe friction device 37 38,. but when thecut away portion of theroller 11 comesaround to the blade 33 and one of the rollers 35, 36passes one-of the projections G0, 61, then the blade, no longer bearingupon the face of the strop 57 offers no further resistance to therotation of the shaft 25 through the gear 24, and the friction device37, 38, with the result that one of the rollers 35, 36 upon the arm 34will swing across the straight side of the cam 14, during the reversalof the blade, so that when the cylindrical portion of the roller 11,with the strop 57 comes around again, the other edge of the blade isbrought into position to bear against the face of thestrop 57. Thisoperation takes place no matthe blade at one cut-tino edoe and then 'tothe opposite side at the other cutting edge when the crank 23 is turnedin one direction, and vice versa when said crank is turned in theopposite direction. The reversal of the blade takes place during thetime when the flat face of the roller 11 is turning next to the shaft 1npractice, the crank 23 is turned -two or three times in one direction,and then the same number of times in the opposite direction. lVhile suchstropping is taking place, the holding ofthe blade in the posi tionshown in Fig. 5 by means of the projections of), (il upon the cam 14; atthe point where the blade leaves the strop 57, prevents the edge of theblade 33 from following the sharp turn or angle of the roller 11 andthus prevents the rounding of the edge of the blade. During the rotationof the roller 11 with it-s strop 57, the cam 15 and roller 1G inconjunction with the spring 18 will give the roller 11 a slightlyreciprocating motion upon the shaft 10 with a resulting heel to pointstropping of the blade so much desired in devices of this kind.

It will thus be seen that I have provided a strapping device for doubleedged blades .embodying all of the objects heretofore set out, while atthe same time, with automatic machinery forturning the same out' inlarge quantities, the resulting structure is cheap to construct and notliable.` to get out of order.

I claim:

1. In a razor stropping device, the combination of a semi-cylindricalstropping roller. a blade holder, means for securing a doubleedged razorblade thereto, means for rotating said stropping roller in eitherdirection, gear and friction connections between said rotating means andsaid holder to cause rotation of both holder and roller in the samerelative directions, when the fiat side of said roller passes adjacentto said holder, and to cause one edge of the razor blade to bear uponthe cylindrical stropping surface of said roller during the remainder ofthe rotation thereof,

2. In a razor stropping device, the combination of a substantiallySenn-cylindrical stropping roller, a blade holder shaft having meansthereon for securing a double edged razor blade thereto, means forrotating said roller in either direction, a pinion mounted upon and infrictional engagement with said blade holder shaft, gear connectionsbetween said pinion and said roller rotating means whereby said razorblade may be alterimtclyv held in contact. with the stropping surface ofsaid roller, and Igiven one half a revolution faces in all,

'ping when the non-cylindrical surface of said roller is passingadjacent to said blade.

3. In afrazor stropping device, the eon1- bination of a frame,-a rollershaft and a blade holder shaft rotatably mounted in said frame, asubstantially semi-cylindrical stroproller mounted upon said rollershaft to rotate therewith, gear connections between said shafts fornormally rotating them in the same direction, friction clutch mechanismbetween said gear connection and said blade holder shaft whereby a razorblade, secured upon said 'razor blade holder shaft may be held incontact with the stropping surface ofl said roller and given a halfrevolution when -the non-cylindrical surface of said roller is passingadjacent tothe said blade.

4. In a stroppiag device for double-edged razor blades, the combinationof a substantially semi-cylindrical stropping roller, a shaft upon whichsaid roller is mounted, a blade holder shaft parallel to said rollershaft, means for securing a razor blade to said holder shaft wit-h.thepath of its edge in the path of the cylindrical surface of said roller,gear and friction connections between said roller shaft and said holdershaft whereby rotation of said roller shaft will cause the edge of saidblade to bear upon the stropping surface of said roller, and produce onehalf a revolution ofl said holder shaft when the edge of said bladepasses-the fiat side of said stropping roller.

5. 'In a razor stropping device, the combination of a supporting frame,a stropping roller shaft and a blade holder shaft connec-` shaft, asubstantially semi-cylindrical strop- 'ping roller mounted upon saidstropping roller shaft to rotate therewith, means upon said roller shaftco-acting with means upon said holder shaft for preventing the edge ofthe razor blade from following the non-cylindrical surface of saidstropping roller, but for permitting the free rotation of said holderand blade while said` non-cylindrical surface is passing adjacent tosaid blade.

6. In a razor 'blade stropping device, the combination of 'a bladeholderlshaftcarrying a razor blade thereon and a stropping roller shaft.with a semi-cylindrical stropping roller thereon, a frame in which saidshafts are mounted parallel to each other, gear mechanisin for normallyrotating said shafts in the same direction, a cam on the stroppingroller shaft and an armon said blade holder shaft for contact. with saidcam, to check the 'rotation of said blade holder shaft.

,-,- of said blade to bear upon the stropping roller, means for rotatingsaid roller in eithel` ing the passing of the fiat side of Said rollerdirection, a razor blade holder having means adjacent lo said holder.

thereon for holding a' double edged razor This specification signed andwitnessed blade, means for causing the face of one edge this 14th day ofJuly, 1911.

PLINY CATUCCI. face oi said roller, and for rotating said blade holderwith the blade therein for reverse Contact with lsaid Stropping roller,dur- VVitnesSes: A

Louis M. SANDERS, 1V. B. WALTZINGER.

